1. for each situation, determine the net force acting upon the object.
situation a
situation b
tfnorm= 3 n
=
3 n
ffrict= 5 n
app = 5 n
ffrict= 5 n
gray = 3n
ray = 3 n
situation c
situation d
"norm= 20 n
fair= 40 n
20 n
gray = 25 n

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?

What is the single most important equation in all of physics?

Sasha has just gotten a new job in a nearby city. after comparison shopping, she found that renting a nice two-bedroom apartment would cost around $800 per month. her utilities would cost about $150 per month. sasha has enough money saved for a down payment, and she found that she can buy a three-bedroom house or condo with a mortgage payment of $1,000 per month, including taxes and homeowner's insurance. her utilities would cost about $200 per month. what is the advantage of buying the house over renting the apartment?